ControlCollection.AddAt(Int32, Control) Method

Reference

Definition

Namespace:: System.Web.UI

Assembly:: System.Web.dll

Important

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Adds the specified Control object to the collection at the specified index location.

public:
 virtual void AddAt(int index, System::Web::UI::Control ^ child);

public virtual void AddAt (int index, System.Web.UI.Control child);

abstract member AddAt : int * System.Web.UI.Control -> unit
override this.AddAt : int * System.Web.UI.Control -> unit

Public Overridable Sub AddAt (index As Integer, child As Control)

Parameters

index: Int32

The location in the array at which to add the child control.

child: Control

The Control to add to the collection.

Exceptions

ArgumentNullException

The child parameter does not specify a control.

ArgumentOutOfRangeException

The index parameter is less than zero or greater than the Count property.

HttpException

The ControlCollection is read-only.

Examples

The following code example uses the AddAt method to create a new LiteralControl named ChildControl2 and add it to the myButton control's ControlCollection collection at the index location of 1.

// Create a LiteralControl and use the Add method to add it
// to a button's ControlCollection, then use the AddAt method
// to add another LiteralControl to the collection at the
// index location of 1.
LiteralControl myLiteralControl = new LiteralControl("ChildControl1");
myButton.Controls.Add(myLiteralControl);
myButton.Controls.AddAt(1,new LiteralControl("ChildControl2"));
Response.Write("<b>ChildControl2 is added at index 1</b>");

// Get the Index location of the myLiteralControl LiteralControl
// and write it to the page.
Response.Write("<br /><b>Index of the ChildControl myLiteralControl is " +
    "</b>" + myButton.Controls.IndexOf(myLiteralControl));

' Create a LiteralControl and use the Add method to add it
' to a button's ControlCollection, then use the AddAt method
' to add another LiteralControl to the collection at the
' index location of 1.
Dim myLiteralControl As LiteralControl =  _
    new LiteralControl("ChildControl1")
myButton.Controls.Add(myLiteralControl)
myButton.Controls.AddAt(1,new LiteralControl("ChildControl2"))
Response.Write("<b>ChildControl2 is added at index 1</b>")

' Get the Index location of the myLiteralControl LiteralControl
' and write it to the page.
Response.Write("<br /><b>Index of the ChildControl myLiteralControl is </b>" & _
                 myButton.Controls.IndexOf(myLiteralControl))

Remarks

The added control can be an instance of any ASP.NET server control, a custom server control you create, or a literal control.

Applies to

Dela via